Z score = (x -mean) / standard deviation.
For this problem X = 50 cm.
Z-score = (50 - 49.2) / 1.8
Z score = 0.8 / 1.8
Z score = 0.44
Look up 0.44 on a z-score table.
0.44 = 0.6700
0.67 x 100 = 67% will be 50 cm or longer.
Answer:
Not a function because it does not pass the Vertical Line Test.
Y(2)-y(1)/x(2)-x(1)
9-7/-2–(-2)
0
It is a vertical line
Answer:
A=13+B
Step-by-step explanation:
Linda earns $13 each hour working part-time at a bookstore.
Linda earns $1 for each book she sells.
Let
A be the amount (in dollars) that Linda earns in an hour;
B be the number of books Linda sells in an hour.
So,
The graph is shown in attached diagram
First, find the slope using the equation, y2 - y1 / x2 - x1
1-5 / 4 - - 4 = -4/8 = -1/2
plug this into slope intercept form
y = -1/2x + b
Next use one of the points to find b using point-slope form. I will use (4,1)
y - y1 = m ( x - x1)
y - 1 = -1/2 (x - 4)
y -1 = -1/2x + 2
+1 +1
y = -1/2x + 3 is your equation
